Summary of the invention
The object of the invention is to solve above-mentioned deficiency and provide a kind of to there is improved performance and be easier to the device of manufacturing.Above-mentioned purpose of the present invention and other objects realize by device as described below.
This device comprises: pipeline, and it has the longitudinal wall in inside that pipeline is separated into passage; The first connector, it is attached to the first end of pipeline, for the flow path between the passage of pipeline is provided; The second connector, it is attached to the second end of pipeline, for the flow path between the passage of pipeline is provided; The first heat transfer element, it comprises substrate, and substrate has first surface, and first surface is for receiving from the heat load of one or more electric component and for heat load is passed to fluid; And second heat transfer element, it is for receiving the fluid from the first heat transfer element, and for transmitting the heat load from fluid.The second surface that the device for cleaning pipeline that is positioned at the position of electric component is crossed substrate embeds substrate at least in part, and does not embed in substrate at the pipeline of the position of electric component.Passage in the embedded part that is positioned at corresponding pipeline of the pipeline embedding is at least in part boiler channel, boiler channel will receive from the heat load of one or more electric component to the fluid in boiler channel, and fluid is delivered to the second heat transfer element.Other passages of pipeline are condenser passages.
The scheme that the pipeline that is not positioned at the position of electric component does not embed substrate can improve the efficiency of device and the structure of simplification device and manufacture.In this scheme, the passage that is not positioned at the pipeline of the position of one or more electric component can be used as condenser passages effectively.
In a preferred embodiment, the distance that its whole passages are between the adjacent channel of condenser passages is greater than the distance between the adjacent channel embedding at least in part in substrate or second substrate.Like this, more boiler channel can be positioned in the place that needs most them, in other words, is positioned at the position of one or more electric component, and it is cooling to obtain the best of one or more electric component.
Preferred embodiment of the present invention is open in the following areas.
According to device of the present invention aspect, the first heat transfer element comprises second substrate, and second substrate has for receiving the first surface from the heat load of one or more electric component; The second surface that the device for cleaning pipeline that is positioned at the position of electric component is crossed second substrate embeds second substrate at least in part, and does not embed in second substrate at the pipeline of the position of electric component; Passage in the embedded part that is positioned at corresponding pipeline of the pipeline embedding is at least in part boiler channel, boiler channel will receive from the heat load of one or more electric component to the fluid in boiler channel, and fluid is delivered to the second heat transfer element; And other passages of pipeline are condenser passages.
According to another aspect of device of the present invention, between position in one or more pipeline embeds substrate or second substrate at least in part, have one or more pipeline not embedding in substrate or second substrate, and the passage of described one or more pipeline is condenser passages.
According to another aspect of device of the present invention, exist by substrate or second substrate and do not embed substrate or second substrate in the gap that separates of pipeline.
According to another aspect of device of the present invention, the second heat transfer element comprises fin, and fin extends to be delivered to surrounding environment by the heat of the fluid in fin self cooling condenser passage in future between the wall of condenser passages.
According to an also aspect of device of the present invention, do not embed distance between the adjacent channel in substrate or second substrate and be greater than the distance between the adjacent channel embedding at least in part in substrate or second substrate.
According to another aspect of device of the present invention, at least some in the passage of pipeline have capillary dimensions.
Embodiment
Fig. 1 illustrates the front view of cooling device 1, and Fig. 2 illustrates the end view of cooling device 1, and Fig. 3 illustrates along the substrate of line A-A in Fig. 1 and the profile of pipeline.Fig. 3 illustrates partial enlarged drawing in addition, and this partial enlarged drawing illustrates the relative position of pipeline and substrate.For the sake of simplicity, the first connector 5 is not illustrated in Fig. 3.
Device 1 comprises pipeline 2 and pipeline 3, and pipeline 2 and pipeline 3 have the longitudinal wall 4 in inside that pipeline 2 and pipeline 3 is separated into passage.The first connector 5 is attached to the first end of pipeline 2 and pipeline 3, and for the flow path between the passage of pipeline is provided, the second connector 6 is attached to the second end of pipeline 2 and pipeline 3, for the flow path between the passage of pipeline is provided.
The first heat transfer element 11 comprises substrate 7, and substrate 7 has first surface 8 for holding one or more electric component 10 and for being delivered to the relative second surface 9 of fluid of the passage of pipeline from the heat load of electric component.For example, electric component can be motor driver for controlling the high power components to motor power supply.
The second heat transfer element 12 receives the hot fluid that adds from the first heat transfer element 11 by pipeline, and heat is delivered to surrounding environment from fluid.In an illustrated embodiment, suppose that by way of example the second heat transfer element comprises fin 13, fin 13 extends in the second end of device between pipeline 2 and pipeline 3, makes heat be delivered to surrounding air by fin 13.Fan can be used to promote to pass through the Air Flow of fin 13 and promote heat from the fluid transmission of environment towards periphery.
From Fig. 2 and Fig. 3, can find out, the pipeline 3 that is positioned at the position of electric component 10 is embedded into substrate 7 at least in part via the second surface 9 of substrate.Be not embedded in substrate at the pipeline 2 of the position of electric component 10.Passage in the embedded part that is positioned at corresponding pipeline of embedding pipeline 3 is boiler channel 14, and boiler channel 14 receives from the heat load of one or more electric component and will add hot fluid and is delivered to the second heat transfer element 12.Other passages of pipeline 2 and pipeline 3 are condenser passages 15.
Can find out from Fig. 1 and Fig. 3, embed at least in part between the position in substrate at one or more pipeline 3, have at least one or the more pipeline 2 that do not embed in substrate.All passages of these pipelines 2 are all condenser passages 15.Those pipelines 2 that gap 16 can be whole passages condenser passages 15 separate with substrate 7.This gap makes to minimize to the direct heat transmission that fluid-cooled condenser passages 15 occurs from substrate 7.
In Fig. 1 to Fig. 3, suppose by way of example the whole length setting of fin 13 along pipeline, between condenser passages from the first connector 5 to second connectors 6.But, all so essential in not all embodiment.For example, in alternative embodiment, fin 13 can only be arranged on the top of device, and making does not have fin in the position of substrate 7.
For example, pipeline 2 and pipeline 3 can be the MPE(multiport extruding of manufacturing by extruded aluminium) pipe.In the embodiment shown, substrate 7 is only provided with compared with thickness portion in the position of electric component 10.In this part of substrate 7, be formed with groove, and the pipeline 3 partly embedding in substrate is arranged in these grooves.This scheme makes to obtain not too large-scale substrate, because only need these compared with thickness portion in several positions, and other parts of substrate can be thinner.Once pipeline is in place in groove, pipeline and substrate may be arranged on high-temperature area, in this high-temperature area, may melt for the scolder that pipeline is attached to substrate.
In Fig. 1 and Fig. 2, device 1 is depicted as in stand up position, utilizes the temperature difference and gravity that fluid is circulated in pipeline.In the first heat transfer element 7, the fluid of heating is for example because evaporation upwards advances to the second heat transfer element 12 and the second connector 6 by boiler channel 14.Once fluid cools down, it turns back to the first connector 5 downwards by condenser passages 15, and the stepping of going forward side by side enters in boiler channel 14, to carry out new circulation.
For promote the circulation of fluid and guarantee when device in shown in also there is correct circulation when another location outside stand up position, some in passage 14 or the passage 15 of pipeline 2 and pipeline 3 can have capillary dimensions.In this case, if the passage that makes fluid be back to the first connector 5 from the second connector 6 has capillary dimensions, so when device in shown in when another location outside stand up position, also can there is fluid flowing from the second connector 6 to the first connector 5.In this context, " capillary dimensions " refers to the passage of capillary dimensions, in this case, passage has enough little size, make it possible to uniquely along the longitudinal direction (in other words, along the flow direction relative with radial direction) produce foam, and produce pulsation effect by promoting liquid thus.In this example, because passage is capillary dimensions, therefore do not need on wall, to have other capillary structure therein.The diameter that is regarded as passage capillaceous depends on its inner fluid that uses (boiling).For example,, formula can be for estimating suitable diameter:
D=(sigma/(g*(rhol-rhov)))^0.5,
Wherein, sigma is surface tension, and g is acceleration of gravity, and rhov is vapour density, and rhol is fluid density.For the R134a(HFC-134a of fluid as being applicable to the device shown in figure), R145fa and R1234ze(tetrafluoeopropene) for, above-mentioned formula is from the value of 1mm to 3mm.
Fig. 4 illustrates the second embodiment of device.The device of Fig. 4 is with 1 to 3 illustrated device is closely similar by reference to the accompanying drawings, and therefore the embodiment of Fig. 4 is by main by pointing out that the difference between these embodiment describes below.
Pipeline 2 and 3, the first connector 5 and the second connector 6 and the second heat transfer element in Fig. 4 with implement similarly about the mode described in accompanying drawing 1 to 3.But, substituting an only substrate, this device has first substrate 7 ', second substrate 17 ' and the 3rd substrate 27 '.Each in first substrate 7 ', second substrate 17 ' and the 3rd substrate 27 ' has the first surface 8 receiving from the heat load of one or more electric component 10.
With previous embodiment similarly, the pipeline 3 that is arranged in the position of electric component 10 embeds first substrate 7 ', second substrate 17 ' and the 3rd substrate 27 ' at least in part by the second surface of substrate, does not embed in first substrate 7 ', second substrate 17 ' and the 3rd substrate 27 ' at the pipeline 2 of the position of electric component 10.
Use more than one substrate to have following advantage, substrate can more accurately be manufactured according to actual needs.There is no need to have the only single large and heavy substrate for all electric components, on the contrary, each parts can have according to actual needs and set the substrate of size.But naturally, one or more in substrate can comprise more than one electric component.In addition, in this case, the result producing is that total weight and the volume of under any circumstance substrate can be minimized according to actual needs.
Be understandable that, foregoing description and accompanying drawing are only intended to set forth the present invention.Be apparent that to those skilled in the art, the present invention can be changed without departing from the scope of the invention or improve.